NAP NAPILLNXRD3PK Thunderglo Illuminated Nock Crossbow Red Half Moon/ 3 Pack

The Thunderglo Lighted Nocks are constructed of a polycarbonate blend nock with an aluminum shaft. It features bright LED illumination by an auto-on system when the nock is shot and stays on until the user unclicks the nock. It's universal collars fits arrow shafts (G/X/H/S)